Embryotractor.



PATENTED OCT. 20, 1903.

lIW. A. HILL. EMBRYOTRACTOR.'.

APPLIOATION FILED JULY 9,. 1903.

N0 MODEL t mams PETERS ou. mom-uma.. wAsHlNnYou, o c.

irte. 742,626.

NITED STATES Patented october 2o, Ieoa. I

PATENT OFFICE.

, WILLIAM A. HILL, or o'oYLE, OKLAHOMA TERRITORY, AssI'eNoR or ONE` I-IALE TO IsAAo PENDLETON HENTEORN, OE OOYLE, OKLAHOMA TERA RITORY.

EM BRYoi'RAOToR.

SPECIFCATION forming part of Letters Patent N o. 742,026, dated October 20, i903.

Application filed July 9, 1903. Serial No. 164,914. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM AQHILL, a citizen of the United States, and a resident of Coyle, Logan county, Oklahoma Territory, have invented certain new and useful Improvements in Embryotractors; and my preferred manner of carrying out the invention is set forth in the following full, clear, and lexact description, terminating with claims Io particularly specifying the novelty.

This invention relates to surgery, and more especially to obstetrical instruments; and the object of the same is to produce an improved embryotractor for use on animals or possibly I5 on human beings.

To this end the invention consists in the construction hereinafter described.

In the drawings, Figure 1 is a side elevaf tion with the parts distended. Fig. 2 is a lonzo gitudinal section with the plunger retracted, showing in dotted lines how the jaws are drawn inward by the cord. Fig. 3 is a section on the dotted line in Fig. 1.

The numeral 1 designates a cylindrical handle or shank, through which slides a plunger 2, having a handpiece 3 at its rear end and a head 4 at its front end beyond the shank. From the forward end of the latter project a number `of jaws `5, which are preferably o-f 3oA steel wire curved slightly outward away from each other and having eyes 6 at their outer extremities. 7 is a draw-cord attached to one of these eyes, leading around through the others and then through the eye to which it is attached and leading thence through the length of the shank and out its rear end to within reach of the operator.

The parts above described are commonly used to a greater or less extent in devices of 4o this character already on the market, and I will now describe the means which I employ for opening and closing the jaws without injury to theanimal or person upon which the instrument is used. The numerals l0 designate spring-wires, whose inner ends are loosely connected to eyes near the edges of the head 4,whose bodies thence cross each other and where they are crossed are led through a ring l1 and whose 5o outer ends are bent radially outward into eyes l2, which loosely embrace the jaws. The ring is not attached to any member, but slides freely on the group ofl wires, being held in place by the divergence of these wires from each other on either side of the ring. Hence the lattel` serves as a fulcrum and even as a movable fulcrum, according to the position it occupies between the power, which is the head 4, and the work, which is the 'group of eyes l2. 6o

In operation the plunger is retracted and the outer ends ofthe jaws are drawn together by the cord, so that the machine can be in serted. 'lhen the cord is released and the `plunger is pressed forward, which carries all the wires forward until they are checked by their outer ends striking the eyes on the jaws, after which further forward movement of the plunger automatically shox-tens the distance between the head 4 and the ring l1 and sep- 7o arates the wires and with them the jaws. The entire device is now moved forward to grasp the embryo, after which the plunger is retracted out of the way. The cord is then drawn upon, whereby the jaws are borne radially inward and embedded slightly in the sides 0f the embryo, and `finally the latter is easily withdrawn bymeans of the machine. Experience has shown that it is not only possible to give the jaws a normaloutward bend 8o or divergence toward their Outer ends, but it is also preferable. The final drawing on the cord opposes their normal outward spring, bends them back to a straight position, and if theyare long it may even bend them a little beyond the straight, and the embedding of the jaws and especially of their eyesinto the soft flesh of the embryo occurs usually at the neck and no injury results.

It is Obvious that the machine can be made 9o in various size s,and the details of construction and the exact shape of parts are matters of little importance.

What is claimed as new isl. In an embryotractor, the combination with the shank, the spring-jaws, and means for drawing their outer ends together; of spreading mechanism comprising a series of wires having eyes at their outer ends loosely engaging said jaws, their bodies crossing each Ico other between their ends, a ring loosely surrounding said bodies where they cross, and means for moving their` inner ends longitudinally of the instrument.

2. In an embryotractor, the combination with the shank, the spring-jaws, and means for drawing their outer ends together; of spreading mechanism comprising a series of wires having eyes at their outer ends loosely engaging said jaws, their bodies crossing each other between their ends, a ring loosely surrounding said bodies where they cross, a plunger sliding through the shank, and a head at-its forward end loosely connected to the inner ends of said wires.

3. In an embryotractor, the combination 

